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Inicio » Actividades I+D > Publicaciones 2001 > Effects of Fe Doping in La1/2Ca1/2MnO3
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"Effects of Fe Doping in La1/2Ca1/2MnO3"
P. Levy, L. Granja, E. Indelicato, D. Vega, G. Polla and F. Parisi
Proc. of the "International Conference on Magnetism" (ICM 2000), Recife, Brazil, August 6-11, 2000. Ed. Dr. S.M. Rezende
J. Magn. Magn. Mater. 226-230, Part 1 (2001) 794-796
The effect of Fe doping in the Mn site on the magnetic, transport and structural properties of polycrystalline La1/2Ca1/2MnO3 was studied. Doping with low Fe concentration (< 10%) strongly affects electrical transport and magnetization. Long range charge order is disrupted even for the lowest doping level studied (~2%). For Fe concentration up to 5% a ferromagnetic state develops at low temperature with metallic like conduction and thermal hysteresis. In this range, the Curie temperature decreases monotonously as a function of Fe doping. Insulating behavior and a sudden depression of the ferromagnetic state is observed by further Fe doping.
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